JP2011063147A - Wiring structure of high voltage cable for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid an influence to a high voltage cable as much as possible when a vehicle receives damage by external force, to retain the number of fitting parts for protecting the high voltage cable to a small degree, and to make a front chamber as compact as possible. <P>SOLUTION: In the wiring structure of the high voltage cable for the vehicle including a mounting unit in the front chamber at a front side of a dash panel, including a battery at a rear side of the dash panel and including the high voltage cable connected to the battery provided along the dash panel, a plurality of thin part units constituting the mounting unit are arranged/provided in a vehicle width direction at the front side of the dash panel, respective rear surfaces of the thin part units are formed so as to generate a level difference in a vehicle longitudinal direction, and they are provided so as to make a distance with the dash panel different. The high voltage cable is wired so as to pass through a dash panel portion opposed to the rear surface of the thin part unit at a side in which a distance from the dash panel is large. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention relates to wiring of a high voltage cable for a vehicle.
In particular, a high-voltage energy system mounted on a broad sense electric vehicle (also referred to as “HV”) including a hybrid electric vehicle (also referred to as “HEV”) and a fuel cell vehicle (also referred to as “FCHEV”). In relation to the arrangement of high-voltage cables used to connect the battery and the generator / motor or inverter, and to the arrangement structure on the vehicle to ensure the required performance in relation to the passive safety of the vehicle .

Among electric vehicles in a broad sense, particularly in hybrid vehicles, a large battery (also referred to as “battery pack” or “battery”) and a fuel tank are mounted on the rear of the vehicle body.
Also, in the high voltage energy system, the high voltage cable used to connect the battery and the generator / motor or inverter is long in the vehicle width direction near the center of the lower surface of the vehicle body floor and in the vehicle longitudinal direction. It is laid to extend.
That is, the front chamber (hereinafter referred to as “the front / rear headlights”) formed in front of the dash panel 102 of the vehicle 101 and behind the left and right headlights (also referred to as “H / L”) 104 and 104 and between the left and right headlights 104 and 104. The engine room ”) 103 includes a mounting unit 107 as shown in FIGS.
At this time, as shown in FIG. 8, the mounting unit 107 includes a plurality of detail units, and the plurality of detail units constitute an engine 111 that constitutes a power unit disposed on the right side in the vehicle width direction of the engine room 103. A generator 112 disposed on the left side of the engine 111, that is, near the center in the vehicle width direction, and a drive motor (simply referred to as “motor”) disposed on the rear side of the generator 112 in the vehicle front-rear direction. ) 113 and a gear case 114 disposed on the rear side in the vehicle longitudinal direction of the engine 111 and on the right side in the vehicle width direction of the drive motor 113, and on the left side in the vehicle width direction of the generator 112 and the drive motor 113. Is provided with an inverter 115.
In addition, for example, the inverter 115 of the mounting unit 107 and a battery (not shown) (also referred to as “battery”) are connected by a high voltage cable 109.
That is, when arranging the high voltage cable 109, as shown in FIGS. 8 and 9, the high voltage cable 109 connected to the battery is centered in the vehicle width direction from the rear in the vehicle front-rear direction to the front. Arrange it so that it passes in the vicinity and below in the vertical direction.
Further, after the high voltage cable 109 passes through the dash panel 102 and reaches the engine room 103, it rises upward behind the drive motor 113.
When the high voltage cable 109 reaches a height position exceeding the generator 112 and the drive motor 113, it is connected to the inverter 115 after reaching the rear side of the inverter 115 from the vicinity of the center in the vehicle width direction toward the left side. ing.
That is, the high-voltage energy system including the high-voltage cable 109 is protected against external forces from the front, rear, left and right on the vehicle.
However, when an external force is applied to the front portion of the vehicle, for example, at the time of a front collision, the engine room 103 is reduced as shown in FIG. 10, and the engine 111, the generator 112, the drive motor 113, the gear case mounted in the engine room 103 are reduced. The mounting unit 107 consisting of 114 retreats backward in the vehicle front-rear direction and comes into contact with the dash panel 102.
At this time, the high voltage cable 109 is sandwiched between the mounting unit 107 and the dash panel 102 as shown by the hatched portions in FIGS. 10 and 11, and there is a disadvantage that the high voltage cable 109 is damaged.
As a measure for eliminating such inconvenience, as shown in FIG. 11, the high voltage cable 109 portion positioned between the mounting unit 107 and the dash panel 102 is firmly covered with a protective member made of a sheet metal cover, a resin protector, or the like. There is a way to do this.

On the other hand, when the generator, drive motor, and inverter are centrally mounted in the engine room that houses the power unit, it is necessary to route a plurality of high-voltage cables between the generator and inverter or between the drive motor and inverter. Yes, even if it is arranged and installed as the minimum required length, it will occupy a considerable space.
And in order to protect the said high voltage cable from damage, covering with the said protection member which has high intensity | strength and high rigidity is performed.
Further, in a hybrid vehicle equipped with an engine, it is necessary to provide a fuel supply system that supplies fuel to the engine and an exhaust system that discharges combustion gas from the engine.
When arranging the high voltage cable, care is taken to keep a distance from the fuel supply system and the exhaust system.
For example, the exhaust system is arranged along the center tunnel of the floor, the fuel supply system is arranged on one of the left and right floors across the center tunnel, and the high voltage cable is arranged on the other floor. Sorting.
Efforts are made to ensure reliability within the range of normal specifications by minimizing the influence of mutual effects.

Japanese Patent No. 3838505

By the way, what is disclosed in the above-mentioned patent document 1 can be provided with a motor generator, a battery, or the like loaded on a gasoline vehicle having an engine as a power unit for driving assistance or rotational power generation. It is a hybrid vehicle modified so that.
Since the vehicle cannot be driven only by the motor, it cannot be said that the vehicle is an electric vehicle, but it is a hybrid vehicle.
A high-voltage energy system including a battery, a generator / motor, an inverter, and a high-voltage cable, an engine, and a fuel tank are installed.
As a modified car, the change of the car body is very limited, but if you pay attention to the high voltage cable, the lower part of the fuel tank and the lower part of the floor are exposed to the outside from the battery and inverter mounted on the rear part to the front engine. Arranged to ensure the necessary performance.
As a hybrid vehicle, a structure in which a high voltage cable is routed near the dash panel is disclosed as a feature.

When constructing an electric vehicle based on a compact small vehicle, the ratio of spending on passenger space and comfort in the vicinity of the center of the vehicle increases, whereas the engine room at the front of the vehicle should be as small as possible. .
When the engine, generator, drive motor, and inverter are centrally mounted in the engine room where the power unit is housed, it is necessary to consider the occupied space and interference in handling high-voltage cables after storing them compactly. There is.
Even when the vehicle is damaged by an external force at the front of the vehicle, it is necessary to avoid affecting the high-voltage energy system as much as possible.
That is, the high voltage cable or the like is caught and broken, and the possibility of leakage is extremely reduced.
If the protective member described above is provided between parts, there is an inconvenience that the probability of contact is reduced by narrowing the gap. It is desirable to avoid this place and provide it in a room with enough space.
In other words, the conventional structure disclosed in FIGS. 8 and 9 is disadvantageous.

Incidentally, in what is disclosed in Japanese Patent Application Laid-Open No. 2004-148851, the inverter and the like are not housed in the engine room (front chamber), and the generator and the drive motor are single as a motor generator, so the occupied space is large. Even in a smaller and smaller engine room, it can be said that it has a relatively large margin and ensures the necessary performance.
However, it is desirable to make further improvements.

  The present invention avoids the influence on the high-voltage cable as much as possible even when the vehicle is greatly damaged by an external force, keeps the equipment parts for protecting the high-voltage cable, The purpose of this project is to make the anterior room for high voltage cables and other items as compact as possible.

  Therefore, in order to eliminate the inconvenience described above, the present invention includes a mounting unit in the front chamber in front of the dash panel, a battery behind the dash panel, and a battery connected to the battery and extending toward the front of the vehicle. In the vehicle high-voltage cable routing structure in which the high-voltage cable is provided along the dash panel as described above, a plurality of detailed units constituting the mounting unit are arranged in the vehicle width direction in front of the dash panel, and The rear surfaces of each of the detail units are formed so as to form a step in the vehicle front-rear direction so as to have different distances from the dash panel, and the high-voltage cable is provided on the side having a larger distance from the dash panel. The unit is arranged to pass through a dash panel portion facing the rear surface of the unit.

As described above in detail, according to the present invention, the mounting unit is provided in the front chamber in front of the dash panel, the battery is provided behind the dash panel, and the battery is connected to the battery and extends toward the front of the vehicle. In the vehicle high-voltage cable routing structure in which the voltage cable is provided along the dash panel, a plurality of detail units constituting the mounting unit are arranged in the vehicle width direction in front of the dash panel, and each of the detail units is arranged. The rear panel is formed so as to form a step in the longitudinal direction of the vehicle, and is provided with a different distance from the dash panel, and the high voltage cable is a dash panel portion facing the rear surface of the detail unit on the side where the distance from the dash panel is large Arrange to pass through.
Therefore, when the mounting unit moves rearward and comes into contact with the dash panel, a gap is secured by the step, and damage to the high voltage cable can be prevented. Even when there is no contact, it is possible to secure a space and avoid interference or maintain a work space.

FIG. 1 is a schematic plan view of an engine room in front of a dash panel of a vehicle. (Example) FIG. 2 is a schematic front view from an arrow C in FIG. (Example) FIG. 3 is a schematic plan view of the engine room in front of the dash panel of the vehicle at the time of a front collision. (Example) FIG. 4 is a schematic plan view of the vehicle. (Example) FIG. 5 is a schematic bottom view of the floor panel portion of the vehicle. (Example) FIG. 6 is a schematic left side view of the engine room in front of the dash panel of the vehicle. (Example) FIG. 7 is a schematic bottom view of the engine room portion in front of the dash panel of the vehicle. (Example) FIG. 8 is a schematic plan view of the engine room in front of the dash panel of the vehicle showing the prior art of the present invention. FIG. 9 is a schematic front view from an arrow A in FIG. FIG. 10 is a schematic plan view of the engine room in front of the dash panel of the vehicle at the time of a front collision. FIG. 11 is a schematic front view from arrow B of FIG.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

1 to 7 show an embodiment of the present invention.
4 to 6, 1 is a vehicle, 2 is a dash panel, 3 is a front chamber in front of the dash panel 2 of the vehicle 1, that is, an engine room, 4 is a headlight, 5 is a front wheel, and 6 is a rear wheel.
The engine room 3, which is the front chamber of the vehicle 1, includes a mounting unit (also referred to as “engine ASSY” or “engine assembly”) 7, and a battery (“battery pack”, The high voltage cable 9 is provided along the dash panel 2 so as to be connected to the battery 8 and extend toward the front of the vehicle.
That is, in the arrangement structure of the high-voltage cable 9 of the vehicle 1, an inverter 15 (described later) of the mounting unit 7 is disposed in the engine room 3 of the vehicle 1 as shown in FIG. The battery 8 is disposed between the wheels 6 and 6 and in a cargo compartment (not shown) above a floor panel (also referred to as “vehicle body floor”) 26 described later. When connecting the inverter 15 with the high voltage cable 9, the battery 8 passes through the vicinity of the center in the vehicle width direction, passes through the upper surface of the fuel tank 10, reaches the dash panel 2, and passes through the dash panel 2. It is routed along the dash panel 2 and connected to the inverter 15 of the mounting unit 7.

A plurality of detail units constituting the mounting unit 7 are arranged in front of the dash panel 2 in the vehicle width direction.
As shown in FIG. 1, the plurality of detail units constituting the mounting unit 7 are, for convenience, an engine (also referred to as “internal combustion engine”) 11 constituting a power unit arranged on the right side in the vehicle width direction of the engine room 3. A generator 12 disposed on the left side of the engine 11, that is, near the center in the vehicle width direction, and a drive motor (simply referred to as “motor”) disposed on the rear side of the generator 12 in the vehicle front-rear direction. ) 13 and a gear case 14 which is disposed on the rear side in the vehicle longitudinal direction of the engine 11 and on the right side in the vehicle width direction of the drive motor 13 and outputs the propulsive force input from the drive motor 13 toward the front wheel 5. An inverter 15 is arranged on the left side of the generator 12 and the drive motor 13 in the vehicle width direction.
In the engine room 3, the engine 11, the generator 12, the drive motor 13, and the gear case 14, which are a plurality of detail units, are accommodated and mounted.
Further, the engine 11 can be switched between driving / stopping while the vehicle 1 is traveling and at any timing.
The generator 12 is mechanically drivingly connected to the engine 11.
An engine 11-generator 12 (unit) is formed as a unit in which these are integrated.
The drive motor 13 generates vehicle driving force.
The gear case 14 transmits power accompanying the drive motor 13.
A drive motor 13-gear case 14 (unit) is formed as an integrated unit.
This is a true power unit for propelling the vehicle 1.

Here, the mounting position relationship of each component will be described in detail. An upper part inside the hood hood 16 of the engine room 3 is connected to the battery 8 in the high voltage energy system, as shown in FIG. The inverter 15 for controlling is provided.
The inverter 15 is arranged and mounted so as to cover both the generator 12 located on the front side in the vehicle front-rear direction and the drive motor 13 located on the rear side of the generator 12.
An intake system auxiliary machine (not shown) is disposed on the engine 11.
When mounting, all of these are assembled together with the mounting unit 7 and mounted together.

Although not shown in detail in the front part of the engine room 3, as shown in FIG. 6, a radiator 17 for an engine cooling system, a radiator (not shown) for a generator / drive motor cooling system, and an air conditioning system And a condenser (not shown), etc. are arranged below the engine room 3, and an electric compressor (not shown) for an air conditioning system, a water pump 18 for a cooling system for a generator / drive motor, etc. Is arranged.
At this time, the generator / drive motor cooling system is configured to cool the generator 12, the drive motor 13, and the inverter 15.

A power unit that generates vehicle driving force and transmits driving force is configured by a driving motor 13 and a gear case 14.
Although not shown, a driving force is transmitted from the gear case 14 to the axle shaft 19.
Considering balance and vibration to the left and right drive shafts (not shown), the drive force is transmitted via an intermediate shaft (not shown) as necessary.
As shown in FIGS. 6 and 7, the drive motor 13 -gear case 14 is arranged on the upper surface side of a sub frame (also referred to as “suspension frame”) (not shown) of the vehicle body 21 via a rear mount 20 that is damped by an elastic member. Fix it.

The engine 11-generator 12 does not generate direct vehicle propulsion, and strictly speaking, it does not constitute a power unit.
Electric power for driving the power unit can be generated.
That is, the vehicle 1 has a series hybrid drive system.
If the engine 11-generator 12 is omitted, an electric vehicle in a narrow sense is obtained.
The engine 11-generator 12 generates power by starting and driving the engine 11 and turning the generator 12 when a specific condition such as a decrease in the charge amount of the battery 8 is satisfied.
The engine 11-generator 12 has its longitudinal direction oriented in the vehicle width direction, and is fixed to the side frame 23 of the vehicle body 21 via mounts 22 at both left and right ends as shown in FIG.
The height of the crankshaft (not shown) of the engine 11 and the rotating shaft (not shown) of the generator 12 are lower than the rotating shaft 24 of the drive motor 13 as shown in FIG. 11—Contributes to keeping the center of gravity of the generator 12 low.

The engine 11-generator 12 and the drive motor 13-gear case 14 are connected so as to be mechanically integrated at a position closest to each other, and then the left and right mounts 22, 22 and the rear mount 20 are connected. It is mounted on the vehicle 1 through three mounts.
While these mounts 20, 22, and 22 normally support stably, when an external force is applied from the front, the engine 11-generator 12 and the drive motor 13-gear case 14 are integrated. The unit (referred to as the “mounted unit 7” for convenience) can be moved substantially horizontally toward the rear of the vehicle.

Although not shown in detail, the rotary shaft 24 of the drive motor 13 is positioned higher than the crankshaft of the engine 11 and the rotary shaft of the generator 12 as shown in FIG.
Thus, in a plan view (or a bottom view (also referred to as “bottom view”)), a casing (not shown) of the generator 12 and a casing (not shown) of the drive motor 13 are aligned in the vertical direction. Arrange the parts to overlap,
The mounting unit 7 can be made compact in the front-rear length, and can be moved with respect to the mounting space of the vehicle body 21. In particular, the dimension between the dash panel 2 and the casing of the drive motor 13 can be secured. Yes.

The gear case 14 has an input shaft (not shown) coaxial with the rotating shaft 24 of the drive motor 13 at the upper portion thereof, and an output shaft (not shown) connected to the axle shaft 19 at the lower portion thereof. .
Further, a reduction gear (not shown) and an operating device (not shown) are accommodated in the gear case 14.
The outer shape of the gear case 14 can be relatively long and short and long.
The intermediate shaft is provided below the drive motor 13.

As shown in FIG. 7, an exhaust pipe 25 constituting the exhaust system of the engine 10 passes under the engine 10 to form two-stage crank-shaped bent portions 25a and 25b. It also extends through the center tunnel 27 of 26 to the rear of the vehicle.
The exhaust pipe 25 has a surrounding shape that bypasses the gear case 14 by two-stage crank-shaped bent portions 25a and 25b.
At this time, by increasing the distance between the two-stage crank-shaped bent portions 25a and 25b of the exhaust pipe 25 and the gear case 14, the influence of radiant heat can be reduced.

As shown in FIGS. 4 and 5, the high voltage cable 9 extends above the floor panel 26 from one end of the battery 8 to the front of the vehicle, and then bends toward the center of the vehicle along the periphery of the battery 8, When it reaches the vicinity of the center in the vehicle width direction, it extends again toward the front of the vehicle.
At this time, as shown in FIGS. 4 and 5, the high voltage cable 9 extending toward the front of the vehicle is placed on the floor panel by the protective cover 28 in the rear portion of the dash panel 2, that is, in a space portion having a sufficient margin. 26.
Further, in this protective cover 28, as shown in FIGS. 5 and 7, since a steering mounting portion 29 is formed in the vicinity of the front wheel 5 on the right side of the vehicle 1, the steering mounting portion 29 is bypassed. The high voltage cable 9 is curved.
The high voltage cable 9 passes through the floor panel 26 from the upper side to the lower side of the floor panel 26 in the vicinity where the rear part of the floor panel 26 rises from the front of the vehicle (see FIG. 6). The vehicle extends in the vehicle front-rear direction along the lower surface of the front portion of the vehicle.

Further, as shown in FIGS. 4 to 6, the high voltage cable 9 is arranged in the vehicle front-rear direction on the lower surface of the front portion of the floor panel 26 between the side frame 23 and the center tunnel 27 so as to follow them. Extend.
At the position where the vehicle front portion of the floor panel 26 is connected to the dash panel 2, the high voltage cable 9 partially enters the end space of the center tunnel 27 and then faces the back surface of the gear case 14. It extends along the surface of the dash panel 2.
A subframe is provided below the dash panel 2 and is a position where the rear mount 20 is installed.

Further, the high voltage cable 9 is arranged in the inner space of the center tunnel 27 and in a space including a space sandwiched between the subframes so as to avoid interference with a steering rack (not shown).
Further, the exhaust pipe 25 is arranged away from each other on the opposite side in the vehicle width direction, and avoids thermal expansion and interference in a narrow and limited space.
At the same time, the length range sandwiched between the dash panel 2 and the mounting unit 7 by extending forward from the front surface of the dash panel 2 from a high position above the inner space of the center tunnel 27. When the space between the mounting unit 7 and the dash panel 2 is reduced due to deformation, the high voltage cable 9 is prevented from being caught between the two.

That is, in this invention, the rear surfaces of each of the plurality of detail units are formed so as to form a step 30 in the vehicle front-rear direction, and are provided with different distances from the dash panel 2, and the high voltage cable 9 is The arrangement is such that the dash panel 2 portion facing the rear surface of the detail unit on the side having a larger distance from the dash panel 2 passes through.
More specifically, when the plurality of detail units are the engine 11, the generator 12, the drive motor 13, and the gear case 14, the step 30 is formed on the rear surface of the drive motor 13 and the gear case 14 that are located rearward in the vehicle longitudinal direction. Is provided.
At this time, the step 30 is provided so that the rear surface of the gear case 14 has a greater distance from the dash panel 2 than the rear surface of the casing of the drive motor 13.
That is, when the distance between the rear surface of the drive motor 13 and the front surface of the dash panel 2 is S1, the distance between the rear surface of the gear case 14 and the front surface of the dash panel 2 is larger than the distance S1, as shown in FIG. S2, i.e.
S1> S2
The step 30 is provided by the distance S1 and the distance S2.
The difference d (see the hatched portion in FIG. 1) between the distance S2 and the distance S1 that form the step 30 is set to be equal to or larger than the maximum outer dimension of the high-voltage cable 9.
Further, as shown in FIGS. 1 and 2, the high voltage cable 9 is connected to the rear surface of the detail unit on the side having a larger distance from the dash panel 2, that is, the dash panel 2 facing the rear surface of the gear case 14 having the distance S2. Arrange to pass the part.
Then, when an external force is applied to the vehicle 1 from the front of the vehicle, for example, in the case of a front collision, the mounting unit 7 is moved rearward as shown in FIG. 3, and the distance S1 becomes 0 (zero) and the mounting unit 7 is in contact with the front surface of the dash panel 2.
At this time, the entire unitized mounting unit 7 comes into contact with the front surface of the dash panel 2, so that the rear surface of the gear case 14 and the front surface of the dash panel 2 facing the rear surface are shown in FIG. A gap due to the difference d between the distance S2 and the distance S1 is ensured between
Even when an external force from the front of the vehicle is applied to the vehicle 1 more than at the time of the above-described front collision, the unitized mounting unit 7 as a whole has a rear surface of the gear case 14 and the front surface of the dash panel 2 facing the rear surface. Between the distance S2 and the distance S1 is retracted with a gap due to the difference d between the distance S1 and the distance S1 being eliminated.
Therefore, when the mounting unit 7 moves rearward and comes into contact with the dash panel 2, a gap is secured by the step 30, and the high voltage cable 9 can be prevented from being damaged. Even when there is no contact, it is possible to secure a space and avoid interference or maintain a work space. Moreover, it is possible to eliminate or simplify parts such as a strong sheet metal cover for collision guards and a resin protector.
In addition, the plurality of detailed units of the mounting unit 7 can be used in a wide range of vehicles by being configured by the drive motor 13 required as an electric vehicle and the gear case 14 required accompanying therewith.
Furthermore, since it can be realized by using a drive motor 13 that has a cylindrical outer diameter because it includes a rotating body and a gear case 14 having a degree of freedom in the casing is accommodated in a shape of a specific dimension, a special technique is newly required. It is easy to use.

Further, the casing of the drive motor 13 of the mounting unit 7 is provided at the center in the vehicle width direction, and the gear case 14 is formed long in the vertical direction and short in the vehicle front-rear direction with the input shaft positioned higher than the output shaft. The rotating shaft 24 of the drive motor 13 is connected to the input shaft of the gear case 14.
Therefore, since the position of the drive motor 13 is high and faces the front surface of the dash panel 2, the mounting unit 7 is reliably brought into contact when moving rearward, and the load is stably received by the dash panel 2. Can do.

Further, the dash panel 2 has an opening structure that becomes a starting point of the center tunnel 27 at a portion connected to the floor panel 26, and the rear surface of the casing of the drive motor 13 is opposed to the upper portion of the opening structure, while The voltage cable 9 is routed from the lower side of the floor panel 26 to the front surface of the dash panel 2 that passes through the opening of the center tunnel 27 and faces the rear surface of the gear case 14.
Accordingly, since the center tunnel 27 is brought into contact with the highly rigid dash panel 2, it can withstand the load and maintain the gap generated by the step 30.
Therefore, it can introduce from a position with a high opening, and can prevent damage.
Further, the arrangement of the high voltage cable 9 can reduce the size of the range overlapping the rear surface of the mounting unit 7 (particularly the rear surface of the gear case 14) and can be introduced into the engine room 3 from a position with a high opening. Etc., the range for providing the like is small.
Also, interference with the steering rack can be avoided.

  The present invention is not limited to the above-described embodiments, and various application modifications are possible.

For example, in the embodiment of the present invention, a series-type hybrid vehicle is illustrated, but a casing of a drive motor that generates propulsive force of the vehicle and a gear case constituted by a reduction gear are similarly provided in the front space of the dash panel. It may be a pure electric vehicle or a hybrid vehicle of another driving method (for example, a parallel method, a split method, etc.) as long as it is arranged to be mounted.
Further, the engine-generator and the drive motor-gear case can be compactly mounted by being integrated, but since the driving force is not transmitted, it is not always necessary to mechanically connect them.
That is, the mounting unit may be composed of a drive motor and a gear case.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Dash panel 3 Engine room 7 Mounted unit 8 Battery 9 High voltage cable 10 Fuel tank 11 Engine 12 Generator 13 Drive motor 14 Gear case 15 Inverter 23 Side frame 24 Drive motor rotating shaft 25 Exhaust pipe 26 Floor panel ("vehicle body Also called “floor”.)
27 Center tunnel 28 Protective cover 29 Steering mounting part 30 Step S1 Distance between the rear surface of the drive motor and the front surface of the dash panel S2 Distance between the rear surface of the gear case and the front surface of the dash panel d Difference between the distance S2 and the distance S1

Claims (4)

  A mounting unit is provided in the front chamber in front of the dash panel, a battery is provided behind the dash panel, and a high voltage cable is provided along the dash panel so as to be connected to the battery and extend toward the front of the vehicle. In the vehicle high-voltage cable routing structure, a plurality of detail units constituting the mounting unit are arranged in the vehicle width direction in front of the dash panel, and the rear surfaces of the detail units are stepped in the vehicle longitudinal direction. The high voltage cable is arranged so as to pass through the dash panel portion facing the rear surface of the detail unit on the side having the larger distance from the dash panel. A vehicle high-voltage cable routing structure characterized by measures.   The plurality of detail units are a drive motor that generates propulsive force of the vehicle, and a gear case that outputs the propulsive force input from the drive motor toward the wheels, and the rear surface of the gear case is more than the rear surface of the casing of the drive motor. The vehicle high-voltage cable routing structure according to claim 1, wherein a step is provided so as to increase a distance from the dash panel.   The casing of the drive motor of the mounting unit is provided at the center in the vehicle width direction, the gear case is formed longer in the vertical direction and shorter in the vehicle front-rear direction with the input shaft positioned higher than the output shaft, and the input shaft of the gear case 3. The vehicle high-voltage cable routing structure according to claim 2, wherein a rotating shaft of the drive motor is connected to the vehicle.   The dash panel has an opening structure serving as a starting point of a center tunnel at a portion connected to the floor panel, and a rear surface of the casing of the drive motor is opposed to an upper portion of the opening structure, while the high voltage cable is connected to the floor panel. 4. A high-voltage cable for a vehicle according to claim 1, wherein the high-voltage cable is routed on a front surface of the dash panel facing the rear surface of the gear case through the opening of the center tunnel from below the panel. Construction.

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